com.michaelgaare.clojure-polyline — com.michaelgaare/clojure-polyline 0.4.0

Functions to encode and decode Google polyline algorithm.

compress clj

(compress rf)

Transducer that compresses polyline coordinates by turning them into deltas from the previous coord.

coord->integer clj

(coord->integer coord)

Returns the coord (a double) multiplied by 100,000 and rounded to nearest integer.

decode clj

(decode polystring)

Takes a polyline-encoded string and returns a collection of decoded [lat long] coordintes.

decoder clj

Transducer stack for decoding.

decompress clj

(decompress rf)

Transducer that decompresses polyline coordinates that have been compressed by turning them into deltas from the previous coord.

encode clj

(encode coords)

Main polyline encoding function. Takes a collection of [lat long] tuples and returns the polyline encoded string representation.

encode-coord clj

(encode-coord x)

Returns the polyline encoded string of given coordinate (a double between -180 and 180).

encoder clj

Transducer stack for encoding.

latlon clj

(latlon [lon lat :as coord])

Converts a coordinate in [lon lat] format to [lat lon].

lonlat clj

(lonlat [lat lon :as coord])

Converts a coordinate in [lat lon] format to [lon lat].

poly-number clj

(poly-number rf)

Transducer that transforms characters from a polyline string into the raw decoded numbers, without double or negative conversion.